Bump actions/upload-artifact from 6 to 7 (#8270)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6 to 7.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -401,14 +401,14 @@ jobs:
 
       - name: "Upload artifacts: binaries"
         if: matrix.upload_binaries
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: binaries-${{ matrix.node-target }}
           path: packages/@rescript/${{ matrix.node-target }}/bin
 
       - name: "Upload artifacts: lib/ocaml"
         if: matrix.upload_libs
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: lib-ocaml
           path: |
@@ -423,7 +423,7 @@ jobs:
       - name: "Upload artifacts: scripts/res/apiDocs"
         id: upload-api-docs
         if: ${{ matrix.generate_api_docs }}
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v7
         with:
           name: api
           path: scripts/res/apiDocs/